If applied, adds a getter to return all campaigns

app/javascript/dashboard/store/modules/campaigns.js

@@ -19,6 +19,9 @@ export const getters = {
       record => record.campaign_type === campaignType
     );
   },
+  getAllCampaigns: _state => {
+    return _state.records;
+  },
 };
 
 export const actions = {